Experimental Confirmation of Local Field Enhancement Determining Far-Field Measurements with Shell-Isolated Silver Nanoparticles

Authors

  • Ariel R. Guerrero,

    1. Materials and Surface Science Group, Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
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  • Yun Zhang,

    1. Materials and Surface Science Group, Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
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  • Ricardo F. Aroca

    Corresponding author
    1. Materials and Surface Science Group, Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
    • Materials and Surface Science Group, Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada.
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Abstract

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The first direct experimental evidence for the dependence on the local field enhancement with Raman/fluorescence measurements in the far field is provided. This is achieved using shell-isolated silver nanoparticles permitting recording both the surface-enhanced Raman scattering (SHINERS) and surface-enhanced fluorescence (SHINEF) in one spectrum from a low quantum yield target molecule in solution. In addition, it is found that the SHINEF approach using shell-isolated silver nanoparticles provides enhancement factors much higher than those achieved with gold SHINs.

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